An Introduction To Yahoo Tech! — Okay, Seriously: What The Heck Is Bitcoin, And Why Do So Many People Prefer It To Dollars And Cents? — Online customer reviews are fantastic, but there's still something to be said for reading a critic you know. Over time, you get to know her opinions, preferences, and style.

App Store Sales Top $10 Billion in 2013 — Record-Breaking December with Over $1 Billion in Sales — CUPERTINO, CaliforniaJanuary 7, 2014Apple® today announced that customers spent over $10 billion on the App Store in 2013, including over $1 billion in December alone.

How the NSA Almost Killed the Internet — Google, Facebook, Microsoft, and the other tech titans have had to fight for their lives against their own government. An exclusive look inside their year from hell—and why the Internet will never be the same. — Washington Post reporters called …

Yahoo News Digest: Get In The Know In No Time — With the introduction of mobile devices, plenty of things have changed. The way we find, consume and share news has evolved. As things become more complex in nature, news consumption has become overwhelming.

Vine Co-Founder Steps Down From Lead Role at Company — Dom Hofmann, co-founder of the social video-sharing service Vine, has stepped down from his lead general manager role at the company, according to three sources close to the situation. — Hofmann, who has led the company since …

The Shady Practice of Mobile App Install Ads — When former CBS Interactive exec Jason Kint tried to read this Associated Press story on his iPhone on Jan. 1, he wasn't just given an intrusive copy-blocking Candy Crush ad. He was automatically redirected to the download page for the popular mobile game in Apple's App Store.

Ford CEO Mulally makes it official: Not joining Microsoft — Ford CEO Alan Mulally said today that he will not leave the company to join Microsoft. — In an interview with the Associated Press on Tuesday, the highly-coveted executive said that he would stay with Ford at least through 2014.